Posted on

cbd oil press

Have You Ever Heard of Cold Pressed CBD?

Why is cold press the best processing method for hemp products and CBD oil?

The cold press method of extracting CBD oil from hemp is by far the most natural, the most environmentally friendly, and results in a CBD oil that contains more elements of the hemp plant, in the ratios found in nature, for the best Entourage Effect.

Our customers and their results from using HempJuus™ products are the proof. We are not allowed to make any health claims, but here’s a fact we can share. One of our larger customers is a medical pain clinic with 10,000 patients dealing with addictions and other issues. In the past, they sold a CBD product made via the CO2 extraction process. After trying our Cold Press Full Spectrum CBD line, they now use our products exclusively.

We’re willing to put our money where your mouth is… If you’d like to try a free sample of one of our products, we’d welcome the opportunity to share one with you here. Please give us a try, you won’t look back.

What is cold press hemp extraction and how does it compare to the alternatives?

Since our main product line is called HempJuus™ (pronounced “HempJuice”), let’s compare making CBD oil to making orange juice. There are 3 main methods of turning hemp plants into CBD oil: cold press, alcohol extraction and CO2 extraction.

What we do is called “cold press” extraction. That’s very similar to fresh squeezed orange juice. We take the hemp plant, AND NOTHING BUT THE HEMP PLANT, and put it through a small press/juicer. The pure, organic hemp extract that comes out of the press is our end product, HempJuus. Because it contains more elements of the hemp plant, like natural fats, vitamins, oils, nutrients, and phytonutrients, our product looks and tastes different than CBD oil from alcohol or CO2 extraction.

Alcohol extraction is like making orange juice from concentrate. Hemp buds and/or leaves are submerged in alcohol, penetrating the plant cell walls and dissolving the CBD into the alcohol solution. That solution is then run through a still, and at various temperatures, the terpenes, CBD and THC are condensed. The final product is dependent on the quality of the distillation, and amounts of each substance vary from batch to batch. Even worse, the remaining biomass is soaked in alcohol and unusable, so it gets thrown away.

CO2 extraction is also like making orange juice from concentrate. But in this case, the concentrate is made by forcing CO2 in an extremely unnatural “supercritical” state through the hemp. Supercritical CO2 is neither a liquid nor gas, but wants to be both. It flows through the hemp like a gas but dissolves the CBD like a liquid solvent. When the CBD is exploded from the cells it turns into a yellow foam, and no longer resembles anything that grows on planet earth. The oil is then mixed with alcohol during processes called emulsification, filtration and distillation to eliminate the lipids (which seems dumb to us, as CBD absorption rates in the body are higher in the presence of lipids, this literally makes the CBD less effective for use). CO2 extraction is the least natural method of CBD extraction.

To make a final product from either alcohol or CO2 extraction, the manufacturer will take the concentrated CBD oil and add back some kind of “carrier oil.” MCT is often used because it’s very resistant to going rancid. So the actual product you are paying big $$ for is mostly, often 80–90 percent, MCT oil extracted from coconuts, not even from the hemp plant.

Look at the pictures below. Which looks more natural to you? The HempJuus™ liquid and powder fresh from the press, or the CO2 extracted yellow foam?

HempJuus™ fresh Whole Plant Hemp Powder and HempJuus Tincture

HempJuus™ fresh Whole Plant Hemp Powder and HempJuus Tincture

The Cold Press method of extracting CBD oil from hemp is by far the most natural, the most environmentally friendly, and results in a CBD oil that contains more elements of the hemp plant, in the ratios found in nature, for the best Entourage Effect.

CBD Oil Extraction from Hemp

As cannabis legalization spreads throughout the U.S., the number of unique businesses entering the industry and shaking things up is rapidly increasing. One innovation that’s taking the cannabis scene by storm is the legal sale of products crafted from cannabidiol (CBD) oil, which appears in numerous forms.

Wondering how this could relate to M.W. Watermark’s filter presses? Keep reading, and we’ll dig into the relationship between the hemp and CBD oil industry and industrial filtration.

An Introduction to the CBD and Hemp Oil Extraction Industry

Before we connect the CBD industry to industrial filtration, let’s discuss what CBD is and how it’s extracted.

CBD is an abbreviation for cannabidiol, a chemical compound derived from the hemp plant. Unlike many other compounds associated with cannabis, the CBD found in hemp doesn’t deliver a high, and is instead used with the intent of treating an array of medical conditions. CBD products are now legally available in nearly every U.S. state in some capacity, and they come in many forms, from edibles to prescription drugs.

How Do Filter Presses Come Into Play?

When it comes to CBD oil, solid-liquid separation enters the picture when it’s time to extract the CBD from the hemp plant. There are many methods for botanical extraction, but most include employing filtration to help ensure a more pure, effective product.

Popular Methods of Botanical Extraction Involving Filtration

CO2 Extraction, also referred to as Supercritical or Winterization, is one such method which takes advantage of the differing solubility of waxes and cannabinoids at temperatures below the freezing point. Essentially, the frozen wax from the hemp plant containing cannabidiol oil is stripped from the plant using carbon dioxide. The wax is then separated from the solvent using a filter press. This separation step is often referred to as “dewaxing”.

Solvent Extraction, also known as Hemp Bio Mass, is another common method which utilizes a maceration process where ground-up hemp is mixed with a solvent such as ethanol, heptane or hexane. (Oftentimes, the extraction process is ultrasound-assisted, via an ultrasonic bath). The solvent strips the CBD oil out of the plant fibers, and then the hemp oil/solvent combination is run through a filter press as a slurry. The solvent is then distilled off, resulting in pure hemp oil. The oil can then be further distilled and purified, if desired.

Chlorophyll Removal

Following extraction, the color of the product is generally dark brown or green due to the presence of chlorophyll. An additional step referred to as “activated carbon filtration” can improve the color without sacrificing quality. A filter press can also be effectively utilized for this step – accomplished when paired with specialized carbon-infused filter media.

CBD Oil Prior to Activated Carbon Filtration to Remove Chlorophyll

CBD Oil Prior to Activated Carbon Filtration to Remove Chlorophyll

CBD Oil Following Activated Carbon Filtration to Remove Chlorophyll

CBD Oil Following Activated Carbon Filtration to Remove Chlorophyll

  • Separation of biomass from solvent
  • Separation of plant lipids and waxes following winterization
  • Chlorophyll removal (activated carbon filtration)
  • Removal of activated carbon from oil
Download Our CBD Oil Extraction Brochure

M.W. Watermark CBD Hemp Oil Filter Press; CO2 Extraction; Solvent Extraction; Ethanol Extraction

M.W. Watermark CBD Hemp Oil Filter Cake; hemp bio mass filtration method

Filter cake (shown from hemp bio mass method) accumulates on the filter cloths and then drops into a dumpster once the cycle has completed and the filter press is opened.

M.W. Watermark CBD Oil Extraction from Hemp. Wax cake from the winterized process builds up on the filter cloths during pressure filtration. CO2 extraction.. Winterization.

Wax cake from the winterized process builds up on the filter cloths during pressure filtration.

M.W. Watermark CBD Oil Extraction from Hemp. A filter cake containing plant waxes resulting from the winterization process.

A filter cake containing plant waxes resulting from the winterization process.

YouTube video

Benefits of Using a Filter Press

Many businesses involved in CBD oil extraction from hemp are realizing multiple benefits from utilizing a filter press including increased speed of production and a higher-quality product.

For example, when a smaller operation moves from using basic filtration media such as brewery bags to the filter cloths found in a filter press, they are finding new levels of production efficiency and speed. Filter cloths are re-usable, versus brewery bags, which are designed for a one-time use. Also, brewery bags are hung up and the hemp is drained via the gravity method, which takes quite a bit more time than pressure filtration using a filter press. Ultimately, employing a filter press results in a more controlled production environment, contributing to a higher-quality product.

Another benefit is that M.W. Watermark offers FDA-compliant filter cloths and filter plates, as well as manifold piping and hydraulic oil and systems designed to combat contamination.

Our selection of easy-to-clean equipment includes a stainless steel manifold with tri-clamp fittings, which is designed to be quickly disassembled for nearly effortless sanitization.

This M.W. Watermark 630mm hemp oil extraction filter press features a stainless steel manifold with tri-clamp fittings that allow for ease of disassembly when cleaning.

Close-up view of a stainless steel manifold with tri-clamp fittings.

The hemp and CBD oil extraction industry is growing quickly. Learn how this industry employs filtration technologies, including filter presses.